Table 3. Cognitive performance vs. rs583583 alleles.

	Schizophrenia			Healthy controls
	C/C (n = 58)	T carriers (n = 32)	p-valuea	C/C (n = 27)	T carriers (n = 24)	p-valuea
male/female	36/22	18/14	0.59b	19/8	14/10	0.37b
Age (years)	44.6	45.7	0.73	24.8	24.5	0.88
	14.8	13.3		7.5	5.9
CA	3.4	3.0	0.40c	5.7	5.8	0.94
	2.0	2.4		0.4	0.4
PEN	7.1	8.0	0.52	0.6	0.4	0.38
	6.9	6.8		0.8	0.7
PEM	4.6	5.6	0.56	0.4	0.1	0.05c
	7.9	6.5		0.6	0.3
TE	20.8	23.3	0.28	10.7	10.8	0.81
	9.4	11.2		2.0	1.7
CPT-IP 4 digit mean d'	1.3	1.3	0.96	2.7	2.7	1.00
	0.9	0.8		0.7	0.8

Results are shown as means and standard deviation.

^at-test (unless noted otherwise).

^bFisher’s exact test.

^cWelch’s t test.